21057884

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{263}}^1\times {\mathrm{541}}^1$

素因数の和:845

約数の個数: 24

約数和(自身を含む): 38061408

約数和(自身を除く): 17003524

約数列:

[1, 2, 4, 37, 74, 148, 263, 526, 541, 1052, 1082, 2164, 9731, 19462, 20017, 38924, 40034, 80068, 142283, 284566, 569132, 5264471, 10528942, 21057884]

約数ペア:

[(1, 21057884), (2, 10528942), (4, 5264471), (37, 569132), (74, 284566), (148, 142283), (263, 80068), (526, 40034), (541, 38924), (1052, 20017), (1082, 19462), (2164, 9731)]